MP5021GQV-Z vs UCC3918DPTRG4
| Part Number |
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| Category | PMIC - Hot Swap Controllers | PMIC - Hot Swap Controllers |
| Manufacturer | Monolithic Power Systems Inc. | Texas Instruments |
| Description | IC HOT SWAP CTRLR GP 22QFN | IC HOT SWAP POWER MANAGER 16SOIC |
| Package | Tape & Reel (TR) | 16-SOIC (0.154", 3.90mm Width) |
| Series | - | - |
| Type | Hot Swap Controller, Monitor | Hot Swap Controller |
| Features | OVP, Thermal Limit, UVLO | Thermal Limit, UVLO |
| Voltage - Supply | 8V ~ 16V | 3 V ~ 6 V |
| Operating Temperature | -40°C ~ 125°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 22-PowerVFQFN | 16-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 22-QFN (3x5) | 16-SOIC |
| Current - Supply | 170 µA | 1mA |
| Applications | General Purpose | General Purpose |
| Current - Output (Max) | 15A | 4.6A |
| Number of Channels | 1 | 1 |
| Internal Switch(s) | Yes | Yes |
| Programmable Features | Current Limit | Circuit Breaker, Current Limit, Fault Timeout |
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1. How does a PMIC hot-swap controller work?
A hot-swap controller protects system components by limiting inrush current during insertion. It monitors parameters such as current and voltage and triggers protection mechanisms such as overcurrent protection or disconnection of power when they exceed the safe range.
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2. How to choose a suitable hot-swap controller?
When selecting a hot-swap controller, you should consider the system's current and voltage range, protection mechanisms (such as overcurrent protection and thermal shutdown), response time, power dissipation, and other required functions.
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3. What is the difference between a hot-swap controller and a power switch?
Hot-swap controllers actively manage current and voltage changes during the plug-in process, while ordinary power switches only have simple on-off functions and cannot provide protection and control functions.
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4. How do hot-swap controllers prevent inrush current?
Through internal current limiting circuits, hot-swap controllers control the rate of current increase at the moment of insertion to avoid damage to the system due to instantaneous inrush current. At the same time, the settable soft start function helps to load the voltage smoothly.
